| Alcoholics Anonymous, Barrie, Barrie and Area Intergroup | Barrie |
| Alcoholics Anonymous, Lindsay - Mailing Address Only, Victoria Haliburton District | Kawartha Lakes |
| Alcoholics Anonymous, Western Georgian Bay District 9 | Owen Sound |
| Alcoholics Anonymous, Alcoholics Anonymous - Northumberland Chapter | Northumberland County |
| Alcoholics Anonymous | Midland |
| Alcoholics Anonymous, Eastern Georgian Bay District 7 Area 86 | |
| Alcoholics Anonymous, Huntsville-Parry Sound District 17 | Huntsville |
| Alcoholics Anonymous, Huron County Meetings | Clinton |
| Alcoholics Anonymous, Stratford and Perth County Meetings | Stratford |
| Alcoholics Anonymous, Peterborough, Kawartha District 86 | Peterborough |
| Alcoholics Anonymous South Simcoe, Alliston, Alcoholics Anonymous | New Tecumseth |
| Alcoholics Anonymous South Simcoe, Borden CFB, Alcoholics Anonymous | Adjala-Tosorontio |
| Alcoholics Anonymous South Simcoe, Bradford, Alcoholics Anonymous | Bradford West Gwillimbury |
| Alcoholics Anonymous South Simcoe, Innisfil - Alcona, Alcoholics Anonymous | Innisfil |
| Alcoholics Anonymous South Simcoe, Innisfil - Stroud, Alcoholics Anonymous | Innisfil |
| Alcoholics Anonymous South Simcoe, Tottenham, Alcoholics Anonymous | New Tecumseth |
| Canadian Mental Health Association, Muskoka-Parry Sound, Virtual Meetings, Gambling Support | |
| CMHA Huron Perth Addiction and Mental Health Services, Huron County office, CMHA Huron Perth Addiction and Mental Health Services, Goderich | Goderich |
| CMHA Huron Perth Addiction and Mental Health Services, Stratford Office - 10 Downie St, CMHA Huron Perth Addiction and Mental Health Services, Stratford | Stratford |
| Cocaine Anonymous, Barrie - No Physical Address, Southern Ontario Cocaine Anonymous - Barrie Meetings | Barrie |
| Four Counties Addiction Services Team, Community Withdrawal Management, Peterborough Office | Peterborough |
| Gamblers Anonymous, Barrie - No Physical Address | Barrie |
| Gamblers Anonymous, Orillia, Gamblers Anonymous, Orillia | Orillia |
| Hope Barrie, Barrie - Mary St, Hope Centre | Barrie |
| Narcotics Anonymous, Central Lake Ontario Area | Oshawa |
| Narcotics Anonymous, Georgian Heartland Area | Clearview (Simcoe County) |
| Nogojiwanong Friendship Centre, Addictions and Mental Health | Peterborough |
| Saugeen First Nation, Saugeen Native Drug and Alcohol Counselling Centre, Saugeen First Nation - 47 Mason Dr | |
| Sexaholics Anonymous Ontario, Barrie - No Physical Address, Sexaholics Anonymous Barrie | Barrie |
| Simcoe Peer Support for Mental Health and Addictions, Collingwood | Collingwood |
| The Uptown Church, Orangeville - 207 Broadway St, Support Groups | Orangeville |